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Astronomical observations

Fifty years ago, physicist Stephen Hawking proposed that dark matter might be a population of black holes, which may have formed shortly after the Big Bang. They also existed for a short time but had an impact on
First-ever model simulations of individual stars in a star cluster in the process of formation suggest possible mechanisms for the formation of intermediate-mass black holes
"The effect of gravitational waves on pulsars is very weak and difficult to detect, but we built the credibility of the findings over time as we collected more data," said Caterina Cazziano, NANOGrav team member and senior lecturer at Caltech.
This year the exact time of the autumnal equinox is September 22 at 14:49 GMT
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